Cookie Cake With Face Fbct

I have an order for a cookie cake, just a large chocolate chip cookie, decorated for a little girl turning 10.

I've done RI pics before, but I want to do a BC transfer for this one. The problem is, I need to know how to do a transfer of the little girls face. I have a picture of her, but I've never seen a picture of anyone doing a FBCT of a face.